Abstract
In old habitation areas of Moscow the soil pollution with benz(a)pyrene is 2,5–3 times higher than in the new ones, in the territory of an oil-refinery is even 500 (!) times higher (200,000 γ per kg soil). Benz(a)pyrene accumulated in the soil, can penetrate into the vegetation as proved by investigation of plants. Some strains of soil bacteria isolated from the polluted soil more or less actively absorb benz(a)pyrene in cultures, some of them destroy it. The results show a kind of circulation of carcinogenic hydrocarbons in human environment: they can fall from the air on the soil, can be destroyed by soil microorganisms or pass in plants. Soil pollution with benz(a)pyrene may serve as an indicator of the overall pollution of human environment with carcinogenic hydrocarbons.
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